Need some 904 trans help

TrailBeast said

What are you doing with the gas pedal during this up and down shifting?
Are you pushing the gas even a little bit more right after it goes into third?

AND there are two springs that look a lot alike but they have different tensions, but I don't remember which ones they are.
(the 1-2 shift valve and the shuttle valve I was thinking?)

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The two springs I found at the shift are totally different, size wise and tension. I'm only holding down the accel enough to gain speed and not even half peddle. I guess I should have put in there that when it does the 1-2-3-2-3 shift it then stays in 3rd unless I floor it and it downshifts but then after letting off it shifts to 3rd normally. But from a full stop this happens.